Pump.



RQGONRADER..

PUMP. APPLIoATIoN FILED APB. 24, 1905..

Patented Oct. 12, 1909.

2 SHEETS-SHEET l.

R. GONRADBR.

PUMP.

APPLICATION FILED APB.. 24.1905.

936,605. Patented o0t.12,19o9.

2 SHEETS-SHEET 2.

wwwwww B. www! cm Mmmm msnmrolo a RUDOLPH CONRADER, 0F IElItIll.,YPENNSYLVANIA.

PUMP.

Specification of Letters Patent.

Patented Oct. 12, 1909.

Application led April 24, 1905. Serial No. 257,184.

To all whom it may concer/n:

Be it known that I, RUDOLPH CONRADER, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented new and useful Improvements in Pumps, of which the following isa speciiicatioi This invention relates to pumps and con` sists incertain improvements in the construction thereof as will be hereinafterfully described and pointed out in the claims.

The invention more particularly relates to that class of pumps which areused in Artesian wells and is peculiarly adapted for such wells and asshown is specially designed for oil wells.

The invention is illustrated in the accompanying drawings as followsFigure l shows a central, longitudinal section through the workingbarrel of the pump, showing the contained parts. Fig. 2, a section onthe line 2 2 in Fig. l. Fig. 3, a -section on the line 3 3 in Fig. l.Fig. 4, a section on the line 4-4 in Fig. 1. Fig. 5, a central,longitudinal sect-ion of the casing head and apparatus at the top of thewell, the section being on the line 5 5' in Fig. 6. Fig. 6, a sideelevation of the apparatus at the top of the well.y Fig. 7, a plan viewof the same apparatus.

A marks the working barrel; A', an extension thereon. The extension A isconv nected with the working barrel by the ordinary coupling a. Theusual intake lor strainer of the pumpB is coupled to the extension A bymeans of the coupling b. This coupling has an interior socketconstruction for seating the standing valve C. The standing valve Ccomprises the fra-me c between which and the coupling b there is thepacking ring c. Itis also provided with the cage c2 in which is arrangedthe ball valve c3. The upper end of the cage has the screw threadedopening c4 for the Vpurpose hereinafter described.

AA plunger D operates in the working barrel. It is in the form of atube. In the lower end of this barrel there is the valve seat andcoupling fl which is screwed into the lower end of the plunger D. Aspider d is arranged above the coupling to cage valve (Z2. The couplingd has the interiorly screw threaded opening d3 at its lower end intowhich is screwed the plunger extension 6X4, On the lower end of thisextension is a coupling d5 having side passages through it da.'V

It has the screw threaded lower end all which is adapted to enter theopening c4 and engage the screw threads therein, so as to lift thestanding valve. The upper end of the plunger D has the interior screwthread ZS into which a coupling d is secured. A hollow sucker rod E isconnected with the coupling Z9 and extends to the top of the well. T hetubing F is connected by a coupling a with the top of the working barreland extends to the top of the well with the usual construction. A ventd10 extends through the coupling d from a point just below the end ofthe plunger D to a point just below the check valve d2.

The principal purpose of the extension d* in this construction is toeffect the pumping action without subjecting the surfaces of the workingbarrel A to contact with the oil which is passed through the pump witheach operation. The oil ordinarily lifted from wells has a greater orless percentage of grit or sand in it, and this acting on the workingsurfaces of the working barrel under the tremendous pressure to whichthey are subjected very quickly cuts out and destroys the working partsof the pump which form the joint between the plunger and the workingbarrel. I prefer to make the extension the full length of the lift orlonger but the purpose may be measurably accomplished if it is made themajor portion of the lift. Starting with the pump operating as norma-lit will be noted that the entire space between the walls d4 and thewalls of the barrel is filled wit-ha liquid and on the upward stroke ofthe plunger this liquid moves up with the plunger, the incoming liquidentering the working barrel about even .with the end of the extensionand follows up in this rela-tive position to the upper end of the strokeof the plunger. It will be noted that when this occurs the lower end ofthe extension is at least even with the lowest point on the workingbarrel with which the plunger comes in contact. The working surfaces ofthe working barrel come in contact therefore only with the oil which hasbeen retained in the barrel between the walls of the extension Z4 andthe walls of the working barrel, that is these surfaces come in contactonly with the clear oil which remains'normally in the pump. On the downstroke of the plunger, liquid is forced through the passage d, extensiond, by the valve d2, through the plunger and through i the hollow suckerrod. The extension travels to near the bottom of the working barrel, soas to facilitate the removal of sediment from it. It will of course beobserved that the liquid with which the extension is filled as theextension reaches its lowest point remains in the extension during theupward movement of the plunger extension, thus carrying out at thebeginning of the downward stroke any sediment that may have entered theextension during the preceding downward stroke.

It will be observed/that the mechanism so far as described` willmaintain a comparatively cleanv liquid between the .walls of theextension d* and the walls of the working barrel by reason of the factthat this liquid remains in this position, and this permits any sedimentto pass out of it during the operation of the pump. To more fullyassurey however the maintaining of a clear liquid in that part of thepump coming in contact with the working surfaces of the working barreland plunger I prefer to maintain above the plunger a column of clearliquid which will, through pressure, prevent the leakage of liquid frombeneath the plunger by it. To accomplish this purposel to the fullestextent the column of liquid should approximate in height the column ofliquid lifted so that there may be a balancing of pressures and to takecare of any leakage that may occur I prefer that this column becontinuously supplied and in the most approved form by such minutequantities las will simply take up the leakage. With a pump so suppliedwith the extension and with the balancing column above the. plunger, theworking surfaces of the working barrel may be kept comparatively clean,thus permitting the use of metallic plungers if desired and assuring thecontinued use of the plunger for an extended period.

I have arranged a preferable means for supplying the column of liquidabove the plunger as just hereinbefore referred to. The hollow vsuckerrod E extends through a stand pipe H having the usual gland L, the upperend of the sucker rod operating as a polish rod. The tubing F is securedin the usual casing head g and in the usual manner. The upperend of thesucker rod E is provided with a T coupling e and extending upwardly fromthis coupling is the extension E which is secured in the ordinary mannertov a walkin@ beam I by means of which the sucker rod is reciprocated inthe operating of the pump. The sucker rod is extended and deflectedthrough the T, e, nipple e', elbow e2 and inverted tube e3. Thisdeflected portion reciprocates with the sucker rod. The inverted tubepasses through the gland j and extends into the upright J. The upright Jis connected with the' pipe K which conveys the oil to any convenientpoint of storage and is provided with the usual check valve c. It willbe noted that in this construction the sucker rod is deiiected andextended and that the deflected portion reciprocates with the suckerrod, and that there is a coupling which connects this deflected portionwith the comparatively fixed or stationary pipe leading to the storagereceptacle. It will also be noted that by inverting the tube f3 thegland j through which it operates may be formed in the upper end of theupright, and thus freed from contact with sediment and that the lowerend being open to the storage pi pe, any grit or foreign substancesentering the upright passes immediately out of it, thus preventing anyaccumulation therein.

In the upper end of the upright J is provided the T coupling j and intothis is connected the pipe f which extends from said coupling to acoupling lt in the stand pipe H. A check valve f is arranged in thispipe which prevents a flow from the upright J to the stand pipe H. Thereis a minute bypass f however which permits a minute delivery of oil pastthe check valve. It will be noted that the oil that reaches the cheekvalve comes from the upper end of the upright J, and that the lower endof the in- 9 verted tube c will normally be below the upper end of theupright and that the liquid in the upper part of the upright has achalice to clear itself of sediment before passing into the pipe f. Tofurther assure clear oil, I interpose the strainer The use of the minuteopening as distinguished from a full opening of the passage relieves thepump of a back pressure through its entire upward stroke. With theconstruction shown, the top of the column in the tube F and theextension thereof in the pipe f recedes from the check valve f with thedownward stroke of the plunger, and this minute delivery of oil takesplace during this time. On the upward stroke of the plunger this columnmoves freely until it comes in contact with the check valve. If thedelivery has been in excess of what the leakage by the plunger may be,the check valve is forced open and this excess expelled.

It is desirable to be able to remove the standing valve C with theextension, plunger and sucker rods. This lnay be accomplished bylowering the sucker rods, so as to bringl the threaded portion (Z7 inthe threaded opening c4. It is also desirable to relieve the sucker rodsof the weight of liquid and to empty the sucker rods, so as to make itmore convenient to handle after they are lifted. To accomplish thispurpose I provide the pin L which is arranged in the extension d4. Itpasses through the guide in its upper end, the guide being open so as topermit the passage of liquid by it. Its

lower end has the reduced extension Z which passes through the bottom ofthe coupling di'. The upper end of this reduced port-ion forms ashoulder Z2 which rests on this coupling. As the extension is screwed inthe opening c4 the lower reduced portion or end of this pin L contactsthe valve c3 and this holds the pin as the extension is lowered so thatit forces the valve d2 oft from its seat, and holds it in this positionas the parts are elevated so that those lifting the rods are relieved ofthe weight of this oil and this disagreeable feature incident touncoupling the rods which would be otherwise filled with oil. It alsopermits of flooding the well.

It will be noted that the vent in this apparatus permits of the escapeof gases which may accumulate in the pump barrel. The space between thewalls of the extension and the walls of the barrel may through theaction of the pump become lled with gases and with the column of liquidin the lift the presence of this gas would very seriously interfere withthe normal operation of the pump. By arranging the vent as shown thetrapped gas when it reaches a pressure through the action of the pumpequal to the liquid in the lift will be forced through the vent andescape. This will permit an inflow of greater and greater amounts ofliquid so that after a short operation of the pump all the gas may beexpelled from the chamber. This action of the vent is supplemented bythe leakage by the plunger which tends to maintain a full pump barrel atall times. This vent will measurably accomplish this purpose if arrangedanywhere above the bottom of the extension. It will however be moreeflicient if arranged exactly at the top because then all the trappedgases may be expelled. The construction shown wherein the pump barrelforms a continuous working surface as distinguished from one in whichthe plunger is the long surface and the pumpbarrel short, is adapted forthis purpose. Because of this, construction the vent may be placed atthe top of the space between the extension and the barrel and alwaysremain in this relation. It will be observed that with each stroke aworking surface is expo-sed and where as shown the working barrel is thelonger element a part of the working surface of the working barrel isexposed. In the broader phases of my invention I do not wish to belimited to this construction inasmuch as these relations may as to somefeatures be reversed.

It will be noted that in the construction shown the extension d4 isconsiderably smaller than the working barrel. By so making it, roughpipe or unfinished material may be used and at the same time thecoupling (Z5 may be attached in the ordinary manner and still be of adiameter to permit of its removal through the working barrel. It will benoted also that the coupling which forms the socket for the standingvalve is arranged within the barrel extension A and the upper end of thestrainer B, so that its edge comes flush with the outer surfaces ofthese parts. This is particularly desirable in that it does away withany obstruction on the surface of these parts and thus facilitates theintroduction of these parts to the lowermost parts of the well. I preferto interpose the strainer f3 in the pipe f so that nothing but strainedliquid passes into this pipe. This strainer may be made very fine byreason of the fact that ordinarily there would be a little backwardmovement of liquid which will clean the strainer.

IVhat I claim as new is 1. In a pump, the combination of a pump barrel;a pump plunger working in said barrel, the lower end of the plungermoving in working Contact with the barrel the major portion of itsstroke; and an extension from the lower end of the plunger of lessdiameter than the plunger extending the major portion of the length ofthe barrel exposed by the plunger in its upward movement, said plungerand extension having passages through which the liquid to be lifted maypass.

2. In a pump, the combination of the pump barrel; the pump plungerworking in said barrel; an extension from the lower end of the plunger'of less diameter than the plunger extending the major portion of thelength of Vthe working surfaces exposed'in the movement of the plungerin the barrel, said extension and plunger having passages through whichthe liquid tol be lifted may pass, and said extension having a freepassage outside its walls extending from its lower end upwardly wherebya wall of liquid may be maintained between the extension and the wallsof the pump barrel.

3. In a pump, the combination of the pump barrel; the pump plungerworking in said barrel; an extension from the lower end of the plungerextending the major portion of the length of the working surfacesexposed in the movement of the plunger in the barrel and being of lessdiameter than the plunger, said extension and plunger having passagesthrough which the liquid to be lifted may pass, and said extensionhaving a free passage outside its walls extending from its lower endupwardly whereby a wall of liquid may be maintained and reciprocatedbetween the extension and the walls of the pump barrel; and a checkvalve arranged above the extension and the bottom of the plunger.

, 4. In a pump, the combination of the pump barrel the pump plungerworking in said barrel; an extension from the lower end of the plungerextending the major portion of the length of the working surfacesexposed in the movement of the plunger in the barrel said extension andplunger having passages through which the liquid to be lifted may pass,and said extension having a free passage outside its walls extendingfrom its lower end upwardly whereby a wall of liquid may be maintainedbetween the extension and the walls of the pump barrel; a cheek valvearranged above the bottom of the plunger, and said extension having avent through it below the cheek valve.

In a pump, the Combination of a pump barrel; a pump plunger working insaid barrel; an extension exten ding from the plunger a major portion ofthe length of the working surfaces exposed in the reeiprooation of thepump, said plunger and extension having' passages through which theliquid to be lifted may pass; and a check valve arranged at the bottomof the plunger, said extension having a vent extending through it nearthe top thereof and below the cheek valve.

(i. In a pump, the combination of a pump barrel; a pump plunger `workingin said barrel, the lower end of the plunger moving in working Contactwith the barrel the major portion of its stroke; an extension with thelower end of the plunger extending the major portion of the length ofthe barrel exposed by the plunger in its upward movem'ent, said plungerand extension having passages through which the liquid to be lifted may,pass, said extension having a vent extending through its upper end.

7. In a pump, the combination with the working barrel; a plungerarrangedin said barrel; an extension extending from the lower' end of saidplunger the major portion of the length of the working surfaces exposedin the operation of the plunger, said extension being of a diameter topermit of its removal through the working barrel; a standing valveat-the lower end of the working barrel, said standing valve having a.diameter to permit its removal through the working barrel; and means forlooking the standing valve with the extension for lifting t-hestandinglvalve.

8. In a pump, the Combination with the working barrel A; the barrelextension A; the coupling a for coupling the extension with the workingbarrel; a standing valve C in the lower end of the barrel extension; aplunger D arranged to operate in the working barrel A, said plungerbeing hollow; a. hollow sucker rod connected with said plunger; theextension d4 from the sucker rod; the coupling (Z5 on the extensionadapted to engage the standing valve, said extension and standing valvebeingof a diameter to permit of their removal through the workingbarrel.

9. In a pump, the combination with the working barrel; the plunger Dtherein having the check valve (Z2 at the bottom thereof; the extension(Z4 extending therefrom; the pin L arranged in said extension; thestanding valve; means for coupling the standing valve with theextension, said means being arranged to force the pin L into engagementwith the Cheek 'alve to lift the same from its seat whereby the suckerrod may be dra-ined.

l0. In a pump, the combination with the working barrel; a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplunger being provided with passages for the movement of liquid throughit to the sucker rod; and means for maintaining a column of liquid abovethe plunger.

ll. In a pump, the combination with the working barrel; a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplunger being provided with passages for the movement of liquid throughit to the sucker rod; and means for maintaining a column of liquidapproximating the height of the lift upon the plunger.

l2. In a pump, the combination with tho working barrel; a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplunger being provided with passages for the movement of liquid throughit to the sucker rod; and means for Continuously delivering andmaintaining a eolumn of liquid above the plunger.

13. In a pump. the combination with the working barrel, a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplungerbeing provided with passages for the movement of liquid throughit to the sucker rod; and means for eontinuously delivering andmaintaining a eolumn of liquid above the plunger to make a columnapproximating the height of thelift.

la. In a pump, the combination with the working barrel; a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplunger being provided with passages for the movement of liquid throughit to the sucker rod; and means for delivering liquid above the plungerin minute quantities.

15. In a pump, the combination with the y vit to the sucker rod; atubing connected with the working barrel approximating the height of thelift and surrounding the sucker rod, said tubing being adapted tomaintain a column of liquid on the plunger.

17. In a pump, the combination with the working barrel; a plunger insaid barrel; a hollow sucker rod y connected with the plunger,saidplunger being provided with passages for the movementof liquid throughit to the sticker rod; means for maintaining a column of liquid abovethe plunger; a tube connected with the working barrel; a connectionbetween said tubing and the pipes for leading off the liquid from thesucker rod; said pipes; a check valve arranged against a How toward thetubing, said tubing and check valve being provided with a bypass aroundthe check valve.

18. In a pump the combination with vthe working barrel; the tubingextending from the working barrel to approximately the height of thelift; a plunger in the working barrel; a liquid weight on the plungercontained in said tubing and forming a column in said tubingapproximating the height of the lift; and a lift pipe extending inalinement with the tubing to approximately the height of the lift forconveying the liquid to be pumped from the working barrel.

19. In a pump, the combination with the working barrel; a tubingextending from the working barrel to approximately the height of thelift; a plunger in the working barrel, said tubing being adapted tomaintain a column of liquid on the plunger; means independent of thetubing for conveying the liquid to be pumped from the working barrel;and means for continuously delivering liquid to said tubing.

20. In a pump, the combination with the working barrel; a tubingextending from the working barrel to approximately the height of thelift; a plunger in the workino' barrel, said tubin being adapted tomaintain a column of lIiquid on the plunger; means independent of thetubing for conveyingthe liquid to be pumped from the working barrel; andmeans for continuously delivering liquid to said tubing in minutequantities.

21. In a pump, the combination with the working barrel; a tubingextending from the working barrel to approximately the height of thelift; a plunger in the working barrel, said tubing being adapted tomaintain a column of liquid on the plunger; means independent of thetubing for conveying the liquid to be pumped from the working barrel;means for continuously delivering liquid to said tubing in minutequantities; and a check valve arranged a ainst a flow to the tubing andpermitting of the expulsion of an excess therein.

22. In a pump, the combination of a work ing barrel; a hollow plunger inthe working barrel; an extension extending from the plunger a distanceapproximately equal to the major portion of the surfaces exposed in theoperation of the pump, said extension and plunger being arranged withpassages for conveying the liquid to be pumped; and means formaintaining a liquid column on said plunger.

23. In a pump, the combination of a working barrel; a hollow plunger inthe working barrel; an extension extending from the plunger' a distanceapproximately equal to the major portion ofthe surfaces exposed in theoperation of the pump, said extension and plunger being arranged withpassages for conveying the liquid to be pumped; and means formaintaining a liquid on said plunger approximating in pressure on theplunger of a column of liquid the height of the lift.

24. In a pump, the combination of a working barrel; a hollow plunger inthe working barrel; an extension extending from the plunger a distanceapproximately equal to the major portion of the surfaces exposed in theoperation of the pump, said extension and plunger being arranged withpassages for conveying the liquid to be pumped; means for maintaining aliquid column on said plunger; and means for conveying the liquid pumpedfrom the passages in the plunger independently of the column on theplunger.

25. In a pump, the combination of a working barrel; a hollow plunger inthe working barrel; an extension extending from the plunger a distanceapproximately equal to the major portion of the surfaces exposed in theoperation of the pump, said extension and plunger being arranged withpassages for conveying the liquid to be pumped; and means formaintaining a liquid column on said plunger, said extension having avent through it for the escape of trapped gases.

26. In a pump, the combination of a hollow sucker rod for conveying theliquid pumped; a deflected extension on the top of the suc-ker rod, saidextension being arranged to reciprocate with the sucker rod; and acoupling for connecting said extension with a comparatively fixed o1'stationary storage pipe; said coupling being arranged to convey liquidunder pressure -from the sucker rod to the storage pipe; and saidstorage pipe.

27. In a pump, the combination of a hollow sucker rod for conveying theliquid pumped; an extension on said sucker rod; a telescopic coupling onsaid extension for connecting said sucker rod with the storage pipe;said coupling being arranged to convey liquid under pressure from thesucker rod to the storage pipe; and said storage pipe.

28. In a pump, the combination of a hollow sucker rod for conveying theliquid pumped; an extension on said sucker rod comprising an invertedtube; an upright 1n which saidtube operates; and a gland at the ,liquidon the plunger.

30. In a pump, the combination of a pump barrel; a pump plunger workingin said barrel; an extension from the lower end of the barrel extendingthe major portion of th'e working surfaces between the barrel andplunger exposed in the movement of the plunger in the barrel, saidextension and plunger having passages through which liquid to be liftedmay pass, and said extension being of a smaller diameter than theworking barrel, to permit of a wall of liquid between the walls of theextension and the walls of the working barrel, and of a diameter topermit of its removal from the working barrel.

3l. In a pump, the combination with the working barrel; a plunger insaid barrel; a hollow sucker rod connected with the plunger, saidplunger being provided with passages for the movement of liquid throughit it to the sticker rod; means for cont-inuously delivering andn'iaintaining a column of liquid above the plunger; and a strainerthrough which the liquid delivered above the plunger is passed.

82. A pumping apparatus having a hollow plunger of a length to extendoutside the well, a working barrel therefor having a snug-fitting lowerportion, a liquid packing receiving chamber having an imperforate wallabout a portion of said plunger above said snug-fitting portion, meansbeing provided for supplying liquid to said chamber, a Valve interposedin said plunger, a standing valve at the bottom of said working barrel,and means for reciprocating said plunger.

33. In a pump, the combination of a pump barrel, a plunger working insaid barrel, a plunger extension below the .plunger, said plunger andextension having a passage therein for the liquid to be lifted, meansfor reciprocating the plunger, said means, barrel and plunger beingarranged and constructed to prevent that part of the extension coming incontact with the liquid to be pumped from contacting the workingsurfaces of the barrel.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

RUDOLPH CONRADEl-. Witnesses CniN'roN B. BURGnss, M. C. SULLIVAN.

